Bottom hole packer



March. 4, 1930.

c. w. FISHER BOTTOM HOLE PACKER Filed July 2., 192e Patented Mar. 4,k1930 UNITED sTATEs PATENT OFFICE CEARLY W. FISHER, OF COFFEYVILLE,KANSAS, ASSIGNOR T0 ROBINSON PAGKER COMPANY, 0F TULSA, OKLAHOMA,ACORPORATION '0F OKLAHOMA :BOTTOM HOLE IPACKER Application ledJuly 2,1926. Serial No. 120,133.

This invention relates to certain new and useful improvements in bottomhole packers for oil wells and the like, the object being to provide abottom hole packer formed of a 5 pair of telescoping sections havingmeans for expanding a ring of rubber so as to engage the wall of thewell and pack the same, means being also provided for packing the spacebetween the sections in case the hole should be large and the sectionstelescope the full space.

Another object of my invention is to vprovide a packer which isexceedingly simple and cheap in construction, the same being composed ofa very few parts which are so arranged that they are not likely to getout of order.

Other and further objects and advantages of the invention will behereinafter set forth and the novel features thereof defined by theappended claims.

In the drawings:

Figure 1 is a vertical section through my improved construction ofpacker;

Figure 2 is a vertical section showing the rubber ring expanded to packthe well; and

Figure 3 is a detail vertical section show ing the telescoping'sectionstelescoped to the full extent so as to bring the shell into engagementwith the lead ring so as to pack the space between the'shell and thebody.

In the drawing l indicates the top of the packer which is preferablycylindrical having an internal threaded; portion 2 to which is adaptedto be screwed the casing of the well. The lower end of the top l isinternally threaded in` which is screwed the upper threaded end of atubular body 3 as shown at 4; which is provided at its lower end with anannular-fla eYV 5 working within a tubular shell 6 whic is provided withan internal flange 7 so as to limit the movement of the body 3 withinthe'shell 6.

The upper end ofthe shell 6 is annularly reduced to form a taperingportion 8 which is adapted to ride under a rubber sleeve 9 forming apacker which forces the sleeve outwardly against the side of the well asclearly shown in Figure 2.

Disposed on the body 1 above the rubber` sleeve 9 is a lead ring l0which is adapted to be engaged by the upper edge of the shell 6 when thetwo sections are telescoped to such an extent as to bring the upper edgein engagement with the ring whereby the space between the shell and bodyis sealed in case the hole should be large at that point and allow thetelescoping sections to' telescope to the full extent.

ln Figure l l have shown the bottom hole packerin position to be loweredinto a well so that the body can be forced downwardly into the shell inorder to expand the rubber packing sleeve 9 into the position shown inFigure 2 against the wall of the well.

lin case the body is forced downwardly beyond the position shown inFigure 2, the upper edge of the shell wilLbe-brought into engagementwith the lead ring 10 so as to seal the space between the shell andbody.

By providing a packer withv a packingv sleeve and a malleable ring l0which is engaged by the movable member, the malleable ring l0 isexpanded so as44 to completely seal the space between the bodyl andshell when the packer is moved into position shown in Figure 3.

From the foregoing description it will be seen that lhave provided abottom hole packer which is composed of a very few parts so arrangedthat the rubber packer can be readily expanded to pack the hole.

What I claim is l. A bottom hole packer comprising a top member, anintermediate body portion and a bottom shell, said body portion andshell being arranged to telescope one within the other, al rubberpacking sleeve arranged around the intermediate body portion and adaptedto be forced outwardly by the bottom shell portion and a malleablemember arranged between the bottom shell and the top member and adaptedto be expanded against the intermediate body portion by the teleg5 to beexpanded by packing sleeve and adapted to engage the packing ring so asto seal the space between the telescoping sections. j

3. A bottom hole packer composed of a to s member adapted to beconnected to the we l casing, an intermediate body portion having anannular external flange at its lower end, a bottom shell portion toreceive said intermediate body portion and having an interm nal annulariange to limit the movement of said body member within said shell, saidbotf tom member being rovided with an annular tapering upper en a rubberpacking sleeve surrounding the bodg portion and adapted t e taperingportion of v the bottom ortion and a lead ring surrounde ing said bo yportion above the packing ring and adapted to be engaged by the upperedge of the bottom shell portion and forced into f go engagement with.the top member for sealing the space between the body portion and theshell ortion.

4. bottom hole packer comprising a air of telescoping members, one ofsaid mem ers -25 being provided with an exterior shoulder, a I

packing sleeve surounding said last mentioned member adapted to be exanded by the other member when said, mem rs are in telescoped positionand a malleable member 80 arranged against said shoulder adapted to beexpanded by the telescoping of said members.

5. A bottom hole packer comprising a air of telescopin members, one ofsaid mem ers being provi ed with an annular shoulder,

$5 a flexible packin sleeve and a malleable rin arranged aroun `ene ofsaid members, sai

ring being dis sed adjacent said shoulder,

said sleeve an ring being adapted to be expanded by the telescoping ofsaid members.

.y @o 6. A packer of the kind described comprising a pair of telescopinmembers, one of said members being provided with a flexible packingsleeve, the other member being pro- Y vided with a tapering portion toexpand the 4| packing sleeve, said members being adapted -to engage oneanother for limiting the longitudmal movement of said members in respectto each other and a malleable member arranged to be engaged by the endof the ta- 50 pering portion of said member for expanding said malleablemember. v

Intestimony whereofl hereunto afiix my signature.

' CHARLEY W. FISHER.

